Nikola "Niki" Pilić is a renowned Croatian former professional tennis player, widely recognized for his exceptional skill and contributions to the sport. Born in Split, Banovina of Croatia, Kingdom of Yugoslavia in 1939, Pilić's journey into tennis began during the summer of 1952 when he started practicing on the clay courts of the Firule tennis club. His remarkable talent and dedication led to numerous achievements, including reaching the semifinals of Wimbledon in 1967 and winning the men's doubles title at the US Open in 1970. Notably, Pilić played a pivotal role in the 1973 Wimbledon boycott, standing up for his beliefs and facing a suspension as a result. Following his retirement from professional tennis, Pilić transitioned into coaching and achieved remarkable success as the first captain to win the Davis Cup trophy for three different nations: Germany, Croatia, and Serbia. He also established a renowned tennis academy in Oberschleißheim near Munich, where several notable players, including Novak Djokovic, have honed their skills. Pilić's enduring legacy in the world of tennis continues to inspire and shape the careers of aspiring athletes, making him a revered figure in the sport.

Nikola Todorov Kotkov, also known as Koteto, was a renowned Bulgarian footballer born in Sofia on December 9, 1938. He began his football journey as a Lokomotiv Sofia trainee and enjoyed a successful career, notably winning the Bulgarian Championship in 1964. Kotkov's talent and skills also earned him the Bulgarian Footballer of the Year award in 1964. Throughout his career, he played a total of 322 matches, scoring 163 goals in the Bulgarian Championship. Kotkov also represented the Bulgaria national team, earning 26 caps and scoring 12 goals, while participating in the 1966 FIFA World Cup in England. Tragically, he passed away in a car accident in the Vitinya Pass of the Balkan Mountains on June 30, 1971, alongside his teammate Georgi Asparuhov. Kotkov's remarkable technique, precise passing, and adept free-kick taking left an indelible mark on the football world, making him a beloved figure in Bulgarian football history.

Nikola Čuturilo, also known as Čutura, is a well-known Serbian rock musician born on July 9, 1962. His musical journey began as a guitarist for various bands, including Kredit and Paviljon. He later joined Riblja Čorba as a guitarist, contributing to several studio albums. Čuturilo's solo career took off with the release of his first album, "9 lakih komada," in 1988, followed by "Raskršće" in 1989. Notably, he formed the band Oblaci and released the album "Rekom ljubavi" in 1991, featuring radio hits like "Glorija" and "Reka ljubavi." Despite the Yugoslav wars, Čuturilo continued to pursue his music career, even performing in London and releasing several solo albums, including "I.D." in 1998, "Nemir" in 2006, and "Tu i sad" in 2012. His contributions to the Serbian music scene have solidified his status as a prominent figure in rock music.

Nikola Petrov, also known as Nikola Petroff, was a renowned Bulgarian wrestler born on December 19, 1873, in Gorna Oryahovitsa, Bulgaria. His wrestling prowess garnered him several prestigious titles, including the "Champion of America" in 1898 and the European Champion in Greco-Roman wrestling in Vienna the following year. Petrov further solidified his legacy by defeating Paul Pons at the Exposition Universelle in Paris in 1900, earning him the title of world champion. Notably, he also participated in the First Balkan War. Following his illustrious career, Petrov established a private wrestling school in Sofia in 1921. He passed away on January 2, 1925, and was laid to rest in his hometown. To honor his legacy, a yearly tournament has been organized in his name in Bulgaria since 1963. In 1998, he was posthumously proclaimed an Honoured Citizen of Gorna Oryahovitsa. Despite a remarkable 25-year wrestling career, Petrov faced only one defeat, at the hands of Marijan Matijević. His contributions to the sport continue to be celebrated, cementing his status as a legendary figure in Bulgarian wrestling history.

Nikola Storm, born on September 30, 1994, is a prominent Belgian professional footballer renowned for his role as a winger for Mechelen. Storm's professional journey kicked off with a remarkable debut in the Belgian Pro League for Club Brugge against KV Mechelen in a triumphant 3–0 home game, where he replaced Maxime Lestienne after 75 minutes on December 7, 2013. Notably, he etched his name in Mechelen's history by scoring his first goal against Gent in the 2019 Belgian Cup Final, securing a memorable 2–1 victory. As of March 3, 2023, his career statistics reflect his significant contributions to the sport. His impressive track record includes notable honors such as the Belgian Super Cup in 2016 with Club Brugge and the Belgian Cup and Belgian First Division B titles in 2018–19 with Mechelen. Nikola Storm's prowess and achievements continue to solidify his status as a revered figure in the world of football. For more information, visit Nikola Storm at the Royal Belgian Football Association or on Soccerway.